Add chat actions, channels/groups mgmt, directory + deadmans bots, network status

Profiles/bots (profiles.py, main.py):
- Surface real send errors; fix group send and member-count staleness (refresh on view)
- Group/channel actions: join, leave, owner delete; consistent member counts
- Contacts: always-visible Chat, plus Clear chat and Delete contact
- Support bot: OpenAI-compatible LLM backend (Grok/Ollama/OpenAI) per-bot config
- Deadmans bot: check-in window, trigger message, recipients, owner
- Directory bot: add-to-group registration, super-user /approve /reject /list, search,
  publishes listing.json in the website schema (directory.py registry module)
- Profile edit (name/bio/avatar) + avatars on list pages
- Global status + /network page (operators, SMP/XFTP servers) and Settings network info

UI (templates):
- Chat rooms; collapsible left sidebar with notifications + network widget
- Per-directory-bot website generated on creation (name substituted)
- Matrix theme; copy/hyperlink addresses; site footer

Ignore runtime bot state and generated directory sites.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

manager/templates/chat.html

@@ -140,7 +140,7 @@ async function sendMsg() {
   const data = await resp.json();
   if (!data.ok) {
     input.value = text;  // restore on failure
-    alert('Failed to send');
+    alert('Failed to send: ' + (data.error || data.detail || 'unknown error'));
     return;
   }
   setTimeout(() => loadMessages(true), 250);  // reflect the sent message quickly